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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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one publication added to basket [233962]
An evaluation of selected Neidium species from the Antarctic region Hamilton, P.B.; de Haan, M.; Kopalova, K.; Zidarova, R.; Van de Vijver, B. (2014). An evaluation of selected Neidium species from the Antarctic region. Diatom Research 29(1): 27-40. http://dx.doi.org/10.1080/0269249X.2013.822020 In: Diatom Research. Taylor & Francis: Bristol Avon. ISSN 0269-249X; e-ISSN 2159-8347, meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 255378 [ aanvragen ]

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Trefwoorden

Geography > Biogeography Morphology Taxa > Species > New taxa > New species Bacillariophyceae [WoRMS]; Neidium E. Pfitzer, 1871 [WoRMS] A, Atlantic [Marine Regions] Marien/Kust; Zoet water

Author keywords

Antarctic region; Neidium

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Auteurs		Top
Hamilton, P.B. de Haan, M., meer Kopalova, K.	Zidarova, R. Van de Vijver, B., meer

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Abstract

The presentation of three distinct Neidium taxa from the sub-Antarctic and Maritime Antarctic region after examining more than 1500 samples from a broad variety of aquatic and terrestrial (micro-)habitats suggests that taxa representing the genus Neidium Pfitzer are not only quite rare in these regions, but that the three species also represent well-defined biogeographical distributions. N. nyvltii sp. nov., N. antarcticum sp. nov. and N. aubertii Manguin are characterized by linear to linear–lanceolate valves with rostrate to capitate apices, a single prominent longitudinal canal along the valve margins and lacinia covering the distal raphe endings. Neidium nyvltii is a benthic alkalophile growing in the Maritime Antarctic region under high total phosphorus (TP) and moderately high chloride concentrations, while the closest taxa for comparison (N. kozlowii Mereschkowsky and its varieties) are also alkalophilic, growing under lower TP concentrations in northern temperate–Arctic regions. Neidium aubertii is an acidophile with a sub-Antarctic distribution, whereas the most comparable taxa are N. bisulcatum (Lagestedt) Cleve, and N. bergii (A. Cleve-Euler) Krammer & Lange-Bertalot both are alkalophiles with northern hemisphere distribution and commonly occurring in the Arctic. There is some evidence of parallel similarities in valve forms between the polar northern and southern hemispheres. The significance of this parallelism is yet to be determined.

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